Dealing with Exponential data

[DeaD_EyE]

The values must divided by 1e15?
You can use decimal.Decimal and change the precision, but Decimal is slow.

import decimal


def convert(integers, divisor='1e15'):
    with decimal.localcontext() as ctx:
        ctx.prec = 20
        for value in integers:
            yield decimal.Decimal(value) / decimal.Decimal(divisor)


list(convert(['2229708157109627', '2204081406354342']))

Output:
[Decimal('2.229708157109627'), Decimal('2.204081406354342')]

Numpy has a float128 datatype, but 64 seems to be enough to represent the value.
Are you using a 32 bit version of Python?
With numpy I got following (Python 3.7.3 x64):

In [34]: import numpy as np                                                                                                                   

In [35]: np.float128(num)                                                                                                                     
Out[35]: 2229708157109627.0

In [36]: np.float64(num)                                                                                                                      
Out[36]: 2229708157109627.0

In [37]: np.float32(num)                                                                                                                      
Out[37]: 2229708100000000.0

In [38]: np.float128(num) / 1e15                                                                                                              
Out[38]: 2.229708157109627

In [39]: np.float64(num) / 1e15                                                                                                               
Out[39]: 2.229708157109627

In [40]: np.float32(num) / 1e15                                                                                                               
Out[40]: 2.22970811252736

In [41]: num / 1e15                                                                                                                           
Out[41]: 2.229708157109627

In [42]: num                                                                                                                                  
Out[42]: 2229708157109627